647325

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{137}}^1$

素因数の和:163

約数の個数: 48

約数和(自身を含む): 1368960

約数和(自身を除く): 721635

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 135, 137, 175, 189, 225, 315, 411, 525, 675, 685, 945, 959, 1233, 1575, 2055, 2877, 3425, 3699, 4725, 4795, 6165, 8631, 10275, 14385, 18495, 23975, 25893, 30825, 43155, 71925, 92475, 129465, 215775, 647325]

約数ペア:

[(1, 647325), (3, 215775), (5, 129465), (7, 92475), (9, 71925), (15, 43155), (21, 30825), (25, 25893), (27, 23975), (35, 18495), (45, 14385), (63, 10275), (75, 8631), (105, 6165), (135, 4795), (137, 4725), (175, 3699), (189, 3425), (225, 2877), (315, 2055), (411, 1575), (525, 1233), (675, 959), (685, 945)]